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Old 04-30-2009, 04:34 PM   #4 (permalink)
MetroMPG
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,534

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 54.46 mpg (US)

Appliance car Mirage - '14 Mitsubishi Mirage ES (base)
90 day: 57.73 mpg (US)
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Quote:
Originally Posted by cfg83 View Post
My advice is that if you have a boxy car like a Honda Element or a Jeep, they could help
Whereas my experience with boxy vehicles and a sedan is they made no measurable difference - http://ecomodder.com/forum/showthrea...fect-6381.html and http://ecomodder.com/forum/showthrea...olla-2390.html

(Although that's with AirTabs, not delta style VG's)

I get the impression that VG's are seen by many as a magic bullet. They're not.

Recall that even in a scientifically optimised deployment of delta wing style VG's, Mitsubishi's results were a reduction in the coefficient of drag of just -0.006 .
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Project MPGiata! Mods for getting 50+ MPG from a 1990 Miata
Honda mods: Ecomodding my $800 Honda Fit 5-speed beater
Mitsu mods: 70 MPG in my ecomodded, dirt cheap, 3-cylinder Mirage.
Ecodriving test: Manual vs. automatic transmission MPG showdown



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
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